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Earnings per Share | 3 Months Ended
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Mar. 31, 2019
Earnings Per Share [Abstract] |
Earnings per Share |
8. | Earnings Per Share
The following table sets forth the computation of basic and diluted net earnings per share (in millions, except per share data):
|  | Three-month period ended March 31, |
|  | 2019 |  |  | 2018 |
Net earnings attributable to controlling interests |  | $ | 334.1 |  |  | $ | 273.7 |
Weighted average number of common shares outstanding |  |  | 184.5 |  |  |  | 181.5 |
Dilutive effect of stock options using the treasury stock method |  |  | 3.9 |  |  |  | 3.5 |
Weighted average number of common and common equivalent shares outstanding |  |  | 188.4 |  |  |  | 185.0 |
Basic net earnings per share |  | $ | 1.81 |  |  | $ | 1.51 |
Diluted net earnings per share |  | $ | 1.77 |  |  | $ | 1.48 |
Anti-dilutive stock-based awards of 1.4 million and 0.2 million shares were outstanding at March 31, 2019 and 2018, respectively, but were excluded in the computation of the dilutive effect of stock-based awards for the three-month periods then ended. These stock-based awards were excluded from the computation because the stock-based awards ’ exercise prices were greater than the average market price of our common shares during the respective period, and therefore, would be anti-dilutive to earnings per share under the treasury stock method.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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